CDI, AC POWER ( ALTERNATING CURRENT ) " SIX PRONG, WITH TWO ROUNDED PLUGS " "GY-6" AND "QMB 139" FOUR STROKE 49cc, 50cc, UP GRADE 80cc, 100cc, 122cc AND 150cc ENGINES ( WORKS ON CHINESE SCOOTER, LIFAN, ROKETA, TAO-TAO...,GATOR 50 )